Famous in part for her many, many famous pals, Paltrow has never spoken much about her friendship with Aniston, 44, but the pair have at least one thing in common: Pitt, 49. The Iron Man 3 actress and Pitt dated from 1994 to 1997, and were even briefly engaged. Pitt and Aniston, of course, were married from 2000 to 2005, with Pitt moving on with now-fiancee Angelina Jolie.

"I spent the '90s trying to hide out, trying to duck the full celebrity cacophony. I started to get sick of myself sitting on a couch, holding a joint, hiding out. It started feeling pathetic," he told Parade in an infamous 2011 interview.

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"I wasn't living an interesting life myself," he continued. "I think that my marriage had something to do with it. Trying to pretend the marriage was something that it wasn't."